Brother John can confirm this story as well....as it happened more than once with various pilots involved.
The Sikorsky Completion Center was well out into the middle of no where....in the area of West Palm Beach.
As part of the Conversion Training we conducted for customer pilots we included some ILS Approaches to West Palm Beach Airport.
One evening.....a Eastern Airlines 727 was ahead of us on approach and seeing an opportunity that was impossible to pass up.....we laid whip to the horses and began to overtake the 727.
Approach Control (being well familiar with this) requested Eastern to increase speed due to overtaking traffic.
Eastern complied.
A minute or so later....ATC requested Eastern to increase speed again......Eastern agreed.
Another minute and ATC yet again asked for a speed increase to be queried by Eastern as to what kind of traffic was overtaking them.....to be told by ATC....."A Helicopter!".
There was a moment's pause....then Eastern with an odd sound to his voice asked....."Helicopter? What kind of Helicopter?".
To be told by an anonymous helicopter pilot....."A damn fast one!"!
Yes....the 155 number was just that!